82477428 has 24 divisors (see below), whose sum is σ = 209942880. Its totient is φ = 24993120.

The previous prime is 82477427. The next prime is 82477441.

82477428 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×82477428² = 13605052258990368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82477428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82477427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312283 + ... + 312546.

It is an arithmetic number, because the mean of its divisors is an integer number (8747620).

Almost surely, 2^82477428 is an apocalyptic number.

It is an amenable number.

82477428 is an abundant number, since it is smaller than the sum of its proper divisors (127465452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82477428 is a wasteful number, since it uses less digits than its factorization.

82477428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624847 (or 624845 counting only the distinct ones).

The product of its digits is 200704, while the sum is 42.

The square root of 82477428 is about 9081.7084295853. The cubic root of 82477428 is about 435.2896788974.

The spelling of 82477428 in words is "eighty-two million, four hundred seventy-seven thousand, four hundred twenty-eight".